CN102672180A - Powdery metallurgical finished product process - Google Patents
Powdery metallurgical finished product process Download PDFInfo
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- CN102672180A CN102672180A CN2012101860932A CN201210186093A CN102672180A CN 102672180 A CN102672180 A CN 102672180A CN 2012101860932 A CN2012101860932 A CN 2012101860932A CN 201210186093 A CN201210186093 A CN 201210186093A CN 102672180 A CN102672180 A CN 102672180A
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Abstract
The invention discloses a powdery metallurgical finished product process. The powdery metallurgical finished product process comprises the following steps: adding components of a lubricant and an MCF-078 in a basic raw material low-alloy steel powder JDYTAB, wherein counted by to the mass of the basic raw material low-alloy steel powder JDYTAB, the adding amount of the lubricant is 0.7% and the adding amount of the MCF-078 is 0.3%; and stirring, forming, sintering, turning, performing thermal processing, performing vibration grinding, performing oil immersion and packaging metallurgical powder into a finished product. Compared with the prior art, the powdery metallurgical finished product process has the advantages of stable production process, high reliability; and a produced powdery metallurgical product is good in gloss, excellent in quality, high in performance and wide in application and can be applied to production of a gear, internal and external rotors, an output shaft and the like.
Description
Technical field
The present invention relates to a kind of finished product technology of powder metallurgy.
Background technology
Mostly existing sintered metal product production technology is: stir material-shaping-sintering-operations such as packing.In this kind technology, a lot of companies are in order to reduce cost, and modes such as prescription or minimizing technology are simplified in employing, provide cost savings though simplify prescription, can the properties of product quality is lacked guarantee.Because powder metallurgy belongs to graininess and is shaped, and reduces the number of prescription and when machined, causes the accessory turning face crude easily, influences glossiness, serious appearance easy fracture phenomenon influences product service life.It is improper to reduce the adjustment of technology or technology, directly causes poor product quality, and performance indications do not reach standard.
Summary of the invention
Goal of the invention: to the problems referred to above, the purpose of this invention is to provide a kind of production technology of sintered metal product, adopt
Quality of item with this explained hereafter is good, stability is strong, and the scope of application is extensive.
Technical scheme: a kind of finished product technology of powder metallurgy may further comprise the steps:
(1) composition of raw materials: in basic material powder low alloyed steel powder JDYT AB, increase component lubricant, MCF-078; The addition of each component is a radix in the quality of basic material powder low alloyed steel powder JDYT AB, and lubricant is 0.5～1.2%, MCF-078 is 0.2～0.6%;
(2) stir: the composition of raw materials powder in the step (1) is stirred, mix;
(3) be shaped: the powder material that mixes is sent into the forming machine hopper, suppress product through shaping dies and give birth to embryo;
(4) sintering: product is given birth to embryo put on carbon plate sintering 3.5～4h in sintering furnace, 670 ℃～1140 ℃ of sintering furnace temperature;
(5) heat treatment: heat treatment: the semi-finished product that sinter are placed on the heat treatment guipure, adopt the heat-treatment furnace heating, 850 ℃ ± 10 ℃ of heating-up temperatures; Heat treatment time 1～3 hour gets into You Cao temper fire then, and the oil temperature is below 60 ℃; Take out of through guipure after quenching, sent into the tempering furnace tempering at last 1～2 hour, 210 ℃ ± 10 ℃ of temperatures; Again product is seen off, the product after quenching is carried out temper can reduce its hardness;
(6) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrates 20～40 minutes and gets product;
(7) oil immersion packing: finished product is cleaned oil immersion, packing.
Component and the quality percentage composition of said basic material powder low alloyed steel powder JDYT AB are: Ni is 1.9%, Cu is 1.6%, Mo is 0.5%, C is 0.01%, impurity is 0～0.1%, surplus is Fe.
According to the detail drawing requirement; The part that mould can not be shaped processes; As the heat treatment of carrying out step (4) after preferably the semi-finished product (4) of step (3) gained being machined again, the step of Vehicle Processing is: with the semi-finished product article that sinter not pressing mold partly adopt lathe to process.
Described lubricant is a zinc stearate.
Said sintering furnace is the net belt type sintering furnace.
Said heat-treatment furnace is the net belt type heat-treatment furnace.
Said product is given birth to the embryo once die stamping forming.
In the component and content of powder metallurgy, the lubricant of increase by 0.5～1.2% can make powder metallurgy when the product shaping demoulding, have better lubrication, avoids product stripping to have some setbacks and causes pulling; Increasing by 0.2～0.6% MCF-078 (cutting agent) can be the road, back and adds and play free machining effect man-hour; Mainly be for avoid because of part be sinter processing; Part has the ripple glaze of similar skin effect phenomenon easily during original powder material production Vehicle Processing, influences part strength; Surface gloss is obviously improved during Vehicle Processing, and recessing intensity obviously improves.
Beneficial effect: compared with prior art, advantage of the present invention is a stable production process, good reliability, and the sintered metal product glossiness of production is good, good quality, performance indications are high, and are applied widely, can be used for producing gear, inner and outer rotors, force-output shaft etc.
The specific embodiment
Below in conjunction with specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Embodiment 1:
(1) composition of raw materials: in 100kg basic material powder low alloyed steel powder JDYT AB, increase the lubricant of 0.8kg, the MCF-078 of 0.4kg; Wherein basic material powder low alloyed steel powder JDYT AB is by 100, and its component and quality percentage composition are: Ni is 1.9%, Cu is 1.6%, Mo is 0.5%, C is 0.01%, impurity is 0～0.1%, surplus is Fe.
(2) stir: the composition of raw materials powder in the step (1) is stirred 1.5h, mix;
(3) be shaped: the powder material that mixes is sent into the forming machine hopper, suppress product through the shaping dies once-forming and give birth to embryo;
(4) sintering: product is given birth to embryo put on carbon plate, sintering in the net belt type sintering furnace is given birth to embryo with product and is sintered semi-finished product into.Sintering furnace temperature: 680 ℃ ± 10 ℃ of minimum temperatures; 1130 ℃ ± 10 ℃ of the highest temperatures, this maximum temperature is higher than the fusing point of copper, and temperature can slowly melt copper powder wherein by low the rising fully; Thereby fill up gap between the product powder particle, product strength and hardness are increased substantially.It is 3.5～4h from advancing stove to coming out of the stove that product is given birth to embryo;
(5) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped processes with the product that sinters;
(6) heat treatment: heat treatment: the semi-finished product that sinter are placed on the heat treatment guipure, adopt the heat-treatment furnace heating, 850 ℃ ± 10 ℃ of heating-up temperatures; Heat treatment time 2 hours gets into You Cao temper fire then, 45 ℃ of oil temperature; Take out of through guipure after quenching, sent into the tempering furnace tempering at last 1.5 hours, 210 ℃ ± 10 ℃ of temperatures; Again product is seen off, the product after quenching is carried out temper can reduce its hardness;
(7) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrate 30 minutes removal surface blots and burr and gets product.
(8) oil immersion packing: finished product is cleaned oil immersion, packing.
Embodiment 2:
(1) composition of raw materials: in 100kg basic material powder low alloyed steel powder JDYT AB, increase the lubricant of 0.5kg, the MCF-078 of 0.2kg; Wherein basic material powder low alloyed steel powder JDYT AB is by 100, and its component and quality percentage composition are: Ni is 1.9%, Cu is 1.6%, Mo is 0.5%, C is 0.01%, impurity is 0～0.1%, surplus is Fe.
(2) stir: the composition of raw materials powder in the step (1) is stirred 1h, mix;
(3) be shaped: the powder material that mixes is sent into the forming machine hopper, suppress product through the shaping dies once-forming and give birth to embryo;
(4) sintering: product is given birth to embryo put on carbon plate, sintering in the net belt type sintering furnace is given birth to embryo with product and is sintered semi-finished product into.Sintering furnace temperature: 680 ℃ ± 10 ℃ of minimum temperatures; 1130 ℃ ± 10 ℃ of the highest temperatures, this maximum temperature is higher than the fusing point of copper, and temperature can slowly melt copper powder wherein by low the rising fully; Thereby fill up gap between the product powder particle, product strength and hardness are increased substantially.It is 3.5～4h from advancing stove to coming out of the stove that product is given birth to embryo;
(5) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped processes with the product that sinters;
(6) heat treatment: heat treatment: the semi-finished product that sinter are placed on the heat treatment guipure, adopt the heat-treatment furnace heating, 850 ℃ ± 10 ℃ of heating-up temperatures; Heat treatment time 1 hour gets into You Cao temper fire then, 50 ℃ of oil temperature; Take out of through guipure after quenching, sent into the tempering furnace tempering at last 1 hour, 210 ℃ ± 10 ℃ of temperatures; Again product is seen off, the product after quenching is carried out temper can reduce its hardness;
(7) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrate 20 minutes removal surface blots and burr and gets product.
(8) oil immersion packing: finished product is cleaned oil immersion, packing.
Embodiment 3:
(1) composition of raw materials: in 100kg basic material powder low alloyed steel powder JDYT AB, increase the lubricant of 1.2kg, the MCF-078 of 0.6kg; Wherein basic material powder low alloyed steel powder JDYT AB is by 100, and its component and quality percentage composition are: Ni is 1.9%, Cu is 1.6%, Mo is 0.5%, C is 0.01%, impurity is 0～0.1%, surplus is Fe.
(2) stir: the composition of raw materials powder in the step (1) is stirred 2h, mix;
(3) be shaped: the powder material that mixes is sent into the forming machine hopper, suppress product through the shaping dies once-forming and give birth to embryo;
(4) sintering: product is given birth to embryo put on carbon plate, sintering in the net belt type sintering furnace is given birth to embryo with product and is sintered semi-finished product into.Sintering furnace temperature: 680 ℃ ± 10 ℃ of minimum temperatures; 1130 ℃ ± 10 ℃ of the highest temperatures, this maximum temperature is higher than the fusing point of copper, and temperature can slowly melt copper powder wherein by low the rising fully; Thereby fill up gap between the product powder particle, product strength and hardness are increased substantially.It is 3.5～4h from advancing stove to coming out of the stove that product is given birth to embryo;
(5) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped processes with the product that sinters;
(6) heat treatment: heat treatment: the semi-finished product that sinter are placed on the heat treatment guipure, adopt the heat-treatment furnace heating, 850 ℃ ± 10 ℃ of heating-up temperatures; Heat treatment time 3 hours gets into You Cao temper fire then, 40 ℃ of oil temperature; Take out of through guipure after quenching, sent into the tempering furnace tempering at last 2 hours, 210 ℃ ± 10 ℃ of temperatures; Again product is seen off, the product after quenching is carried out temper can reduce its hardness;
(7) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrate 40 minutes removal surface blots and burr and gets product.
(8) oil immersion packing: finished product is cleaned oil immersion, packing.
Embodiment 4:
The force-output shaft that adopts described production technology of embodiment 1-3 and prior art to make is respectively compared, and the product test data of experiment is as shown in the table:
| Force-output shaft | Recessing glossiness (max=6.3) | Force-output shaft C catching groove tensile strength |
| Embodiment 1 | ?1.0 | ?680Kgf |
| Embodiment 2 | ?2.0 | ?600Kgf |
| Embodiment 3 | ?4.0 | ?650Kgf |
| Commercially available | ?5.0～7.8 | ?200Kgf～450Kgf |
Visible by above-mentioned correction data, the goods glossiness that adopts powder metallurgical production technique of the present invention to produce is good, and performance indications are high, and product quality is better.
Claims (7)
1. the finished product technology of a powder metallurgy is characterized in that may further comprise the steps:
(1) composition of raw materials: in basic material powder low alloyed steel powder JDYT AB, increase component lubricant, MCF-078; The addition of each component is a radix in the quality of basic material powder low alloyed steel powder JDYT AB, and lubricant is 0.5～1.2%, MCF-078 is 0.2～0.6%;
(2) stir: the composition of raw materials powder in the step (1) is stirred, mix;
(3) be shaped: the powder material that mixes is sent into the forming machine hopper, suppress product through shaping dies and give birth to embryo;
(4) sintering: product is given birth to embryo put on carbon plate sintering 3.5～4h in sintering furnace, 670 ℃～1140 ℃ of sintering furnace temperature;
(5) heat treatment: heat treatment: the semi-finished product that sinter are placed on the heat treatment guipure, adopt the heat-treatment furnace heating, 850 ℃ ± 10 ℃ of heating-up temperatures; Heat treatment time 1～3 hour gets into You Cao temper fire then, and the oil temperature is below 60 ℃; Take out of through guipure after quenching; Sent into the tempering furnace tempering at last 1～2 hour, 210 ℃ ± 10 ℃ of temperatures are seen product off again;
(6) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrates 20～40 minutes and gets product;
(7) oil immersion packing: finished product is cleaned oil immersion, packing.
2. a kind of powder metallurgy according to claim 1 is characterized in that: component and the quality percentage composition of said basic material powder low alloyed steel powder JDYT AB are: Ni is 1.9%, Cu is 1.6%, Mo is 0.5%, C is 0.01%, impurity is 0～0.1%, surplus is Fe.
3. the production technology of a kind of sintered metal product according to claim 1, it is characterized in that: described lubricant is a zinc stearate.
4. according to the production technology of each described a kind of sintered metal product of claim 1 to 3; It is characterized in that: carry out the heat treatment of step (4) after the semi-finished product (4) of step (3) gained are machined again, the step of Vehicle Processing is: with the product that sinters not pressing mold partly adopt lathe to process.
5. according to the finished product technology of each described a kind of powder metallurgy of claim 1 to 3, it is characterized in that: said sintering furnace is the net belt type sintering furnace.
6. according to the finished product technology of each described a kind of powder metallurgy of claim 1 to 3, it is characterized in that: said heat-treatment furnace is the net belt type heat-treatment furnace.
7. according to the finished product technology of each described a kind of powder metallurgy of claim 1 to 3, it is characterized in that: said product is given birth to the embryo once die stamping forming.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990066A (en) * | 2012-11-25 | 2013-03-27 | 安徽普源分离机械制造有限公司 | Powder metallurgy forming and preparation method of valve rod of diaphragm valve |
| CN103831432A (en) * | 2012-11-27 | 2014-06-04 | 安徽省恒宇粉末冶金有限公司 | Automobile power steering pump powder metallurgy inner and outer rotor formula and preparation technology |
| CN103846439A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method for gear of motorcycle cooling pump |
| CN104259462A (en) * | 2014-09-10 | 2015-01-07 | 太仓市锦立得粉末冶金有限公司 | Technology for manufacturing gear output shaft by means of powder metallurgy |
| CN108555366A (en) * | 2018-02-06 | 2018-09-21 | 南通东海机床制造集团有限公司 | A kind of automatic clipper |
| CN110997190A (en) * | 2017-08-04 | 2020-04-10 | 住友电工烧结合金株式会社 | Method for producing a sintered component and sintered component |
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| CN101524757A (en) * | 2009-04-24 | 2009-09-09 | 马鞍山市华东粉末冶金厂 | Method for producing fly hammer seat by powder metallurgy |
| CN101634238A (en) * | 2009-08-31 | 2010-01-27 | 桐城市汽车部件有限公司 | Temperature-pressure-die wall lubrication valve seat containing rare earth powder metallurgy and manufacturing method thereof |
| CN102000825A (en) * | 2009-09-02 | 2011-04-06 | 东睦新材料集团股份有限公司 | Method for manufacturing driving gear of motorcycle clutch |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990066A (en) * | 2012-11-25 | 2013-03-27 | 安徽普源分离机械制造有限公司 | Powder metallurgy forming and preparation method of valve rod of diaphragm valve |
| CN103831432A (en) * | 2012-11-27 | 2014-06-04 | 安徽省恒宇粉末冶金有限公司 | Automobile power steering pump powder metallurgy inner and outer rotor formula and preparation technology |
| CN103831432B (en) * | 2012-11-27 | 2016-03-23 | 安徽省恒宇粉末冶金有限公司 | Boosting pump for car steering powder metallurgy inner and outer rotors formula and manufacture craft |
| CN103846439A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method for gear of motorcycle cooling pump |
| CN103846439B (en) * | 2012-12-03 | 2016-02-24 | 重庆聚能粉末冶金有限公司 | A kind of manufacture method of motorcycle coolant pump gear |
| CN104259462A (en) * | 2014-09-10 | 2015-01-07 | 太仓市锦立得粉末冶金有限公司 | Technology for manufacturing gear output shaft by means of powder metallurgy |
| CN110997190A (en) * | 2017-08-04 | 2020-04-10 | 住友电工烧结合金株式会社 | Method for producing a sintered component and sintered component |
| CN110997190B (en) * | 2017-08-04 | 2021-12-10 | 住友电工烧结合金株式会社 | Method for producing a sintered component and sintered component |
| CN108555366A (en) * | 2018-02-06 | 2018-09-21 | 南通东海机床制造集团有限公司 | A kind of automatic clipper |
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Application publication date: 20120919 |